Live levels from 26 monitoring stations across County Durham, Cumberland, Derby, Derbyshire, East Riding of Yorkshire…, updated every 15 minutes.
⚠️ Several distinct UK rivers share the name “River Derwent” — sections below are grouped by catchment.
Gauges
River Derwent — Derwent
15 stations in this catchment
| Station | Town | Level now | Status | Trend |
|---|
| Mowthorpe Weir Headstructure | Mowthorpe Weir Head | 41.18 mAOD 23m ago | Low | — |
| ↓ 4.3 km by river |
| Forge Valley | Forge Valley | 0.13 m 35h ago | old reading | |
| ↓ 880 m by river |
| West Ayton | East Ayton | 0.07 m 23m ago | Normal | ▽ |
| ↓ 27.0 km by river |
| Low Marishes | Low Marishes | 1.31 m 23m ago | Normal | — |
| ↓ 6.8 km by river |
| Malton, A64 Road Bridge | Old Malton | 0.39 m 23m ago | Normal | — |
| ↓ 3.5 km by river |
| Malton | Malton | 0.50 m 23m ago | Low | — |
| ↓ 10.8 km by river |
| Kirkham Sluices | Kirkham Sluices UPSTREAM | 14.21 mAOD 23m ago | Low | — |
| ↓ 9.9 km by river |
| Buttercrambe | Buttercrambe | 0.09 m 23m ago | Low | — |
| ↓ 5.1 km by river |
| Stamford Bridge | Tan Hall | 7.21 mAOD 23m ago | Normal | — |
| ↓ 10.4 km by river |
| Elvington Sluicesstructure | Elvington | 5.77 mAOD 23m ago | Normal | — |
| ↓ 13.7 km by river |
| Bubwith Bridge | Bubwith | 2.72 mAOD 23m ago | Normal | ▲ |
| ↓ 8.1 km by river |
| Loftsome Bridge | Loftsome Bridge | 2.56 mAOD 23m ago | Normal | ▲ |
| ↓ 2.5 km by river |
| Barmby | Barmby Barrage Upstream | 2.58 mAOD 23m ago | Normal | ▲ |
| not connected on the river map |
| Blackhall Mill | Blackhall Mill | 0.07 m 23m ago | Low | ▽ |
| ↓ 7.0 km by river |
| Rowlands Gill | Rowlands Gill | 0.14 m 23m ago | Normal | — |
River Derwent — Derbyshire Derwent
6 stations in this catchment
| Station | Town | Level now | Status | Trend |
|---|
| Yorkshire Bridge | Thornhill | 0.30 mASD 23m ago | Low | — |
| ↓ 4.3 km by river |
| Mytham Bridge | Bamford | 0.77 mASD 23m ago | Low | — |
| ↓ 17.7 km by river |
| Chatsworth | Carlton Lees | 1.00 mASD 23m ago | Low | — |
| ↓ 14.8 km by river |
| Matlock | Matlock Bath | 0.30 mASD 23m ago | Normal | — |
| ↓ 31.1 km by river |
| Derby City | Derby | 0.55 mASD 23m ago | Low | — |
| ↓ 17.8 km by river |
| Church Wilne | Shardlow | 0.50 mASD 23m ago | Normal | — |
River Derwent — Derwent West Cumbria and Duddon
4 stations in this catchment
River Derwent — Tyne
1 station in this catchment
| Station | Town | Level now | Status | Trend |
|---|
| Eddys Bridge | Muddleswick | 0.27 m 23m ago | Normal | — |
Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.
Contains OS data © Crown copyright and database rights 2026.
Gauged tributaries
Streams and rivers with a gauge whose water joins the Derwent above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
River Derwent — Derwent
8 gauged tributaries, 24 gauges
Joins the Derwent between West Ayton and Low Marishes, no more than 11.9 km by river above Low Marishes.
Its water passes Low Marishes and every gauge below it on the Derwent. It does not pass West Ayton or the gauges above it.
Joins the Derwent between West Ayton and Low Marishes, no more than 7.8 km by river above Low Marishes.
Its water passes Low Marishes and every gauge below it on the Derwent. It does not pass West Ayton or the gauges above it.
Joins the Derwent between Low Marishes and Malton, A64 Road Bridge, no more than 5.6 km by river above Malton, A64 Road Bridge.
Its water passes Malton, A64 Road Bridge and every gauge below it on the Derwent. It does not pass Low Marishes or the gauges above it.
Gauged streams joining the Rye
Joins the Derwent between Malton, A64 Road Bridge and Malton, no more than 520 m by river above Malton.
Its water passes Malton and every gauge below it on the Derwent. It does not pass Malton, A64 Road Bridge or the gauges above it.
Joins the Derwent between Malton, A64 Road Bridge and Malton, no more than 1.3 km by river above Malton.
Its water passes Malton and every gauge below it on the Derwent. It does not pass Malton, A64 Road Bridge or the gauges above it.
Joins the Derwent between Elvington Sluices and Bubwith Bridge, no more than 16.5 km by river above Bubwith Bridge.
Its water passes Bubwith Bridge and every gauge below it on the Derwent. It does not pass Elvington Sluices or the gauges above it.
Gauged streams joining Bielby Beck
Joins the Derwent between Elvington Sluices and Bubwith Bridge, no more than 14.7 km by river above Bubwith Bridge.
Its water passes Bubwith Bridge and every gauge below it on the Derwent. It does not pass Elvington Sluices or the gauges above it.
Joins the Derwent between Elvington Sluices and Bubwith Bridge, no more than 13.8 km by river above Bubwith Bridge.
Its water passes Bubwith Bridge and every gauge below it on the Derwent. It does not pass Elvington Sluices or the gauges above it.
Where the Derwent goes
Below Barmby, its water next reaches Goole, a gauge on River Ouse, 15.1 km by river downstream.
River Derwent — Derbyshire Derwent
6 gauged tributaries, 9 gauges
Joins the Derwent between Yorkshire Bridge and Mytham Bridge, no more than 8.4 km by river above Mytham Bridge.
Its water passes Mytham Bridge and every gauge below it on the Derwent. It does not pass Yorkshire Bridge or the gauges above it.
Joins the Derwent between Chatsworth and Matlock, no more than 25.5 km by river above Matlock.
Its water passes Matlock and every gauge below it on the Derwent. It does not pass Chatsworth or the gauges above it.
Gauged streams joining the Wye
Joins the Derwent between Matlock and Derby City, no more than 13.8 km by river above Derby City.
Its water passes Derby City and every gauge below it on the Derwent. It does not pass Matlock or the gauges above it.
Joins the Derwent between Matlock and Derby City, no more than 25.9 km by river above Derby City.
Its water passes Derby City and every gauge below it on the Derwent. It does not pass Matlock or the gauges above it.
Joins the Derwent between Matlock and Derby City, no more than 13.7 km by river above Derby City.
Its water passes Derby City and every gauge below it on the Derwent. It does not pass Matlock or the gauges above it.
Joins the Derwent between Derby City and Church Wilne, no more than 18.4 km by river above Church Wilne.
Its water passes Church Wilne and every gauge below it on the Derwent. It does not pass Derby City or the gauges above it.
River Derwent — Derwent West Cumbria and Duddon
4 gauged tributaries, 10 gauges
Joins the Derwent above Portinscale, its highest gauge.
Its water passes every gauge on the Derwent, from Portinscale down.
Joins the Derwent above Portinscale, its highest gauge, no more than 970 m by river above Portinscale.
Its water passes every gauge on the Derwent, from Portinscale down.
Gauged streams joining the Greta
Joins the Derwent above Ouse Bridge.
Its water passes Ouse Bridge and every gauge below it on the Derwent.
Joins the Derwent between Ouse Bridge and Kingfisher, Cockermouth, no more than 750 m by river above Kingfisher, Cockermouth.
Its water passes Kingfisher, Cockermouth and every gauge below it on the Derwent. It does not pass Ouse Bridge or the gauges above it.
River Derwent — Tyne and Derwent
No gauged tributary joins the Derwent above Rowlands Gill on the river map. Streams without a gauge are not counted here.
Where the Derwent goes
No gauge below Rowlands Gill is known on the river map.
Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.
River Derwent — Derwent
Streams without a gauge
Named streams on the river map that flow into the Derwent and have no gauge of their own. Each has a page with what is known about it: the next gauge downstream, and any storm overflows or water-sampling points placed on it.
River Derwent — Derbyshire Derwent
Streams without a gauge
And 9 more.
River Derwent — Derwent West Cumbria and Duddon
Streams without a gauge
River Derwent — Tyne and Derwent
Streams without a gauge
Storm overflows upstream
River Derwent — Derwent
69 storm overflows are traced upstream of Barmby, the Derwent’s lowest gauge on the river map: on the Derwent itself, on its gauged tributaries, and on smaller streams that join above there.
- 0 report discharging now
- 69 not discharging
- 0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed
Official figures for 2025, for the overflows traced upstream of Barmby: 1,531 spills over 11,696 hours in total, across all 69.
Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Derwent includes the smaller streams that join it there. Every overflow traced is listed here, each stretch in full. Back to the short lists →
Between West Ayton and Low Marishes12 overflows
- Stonegate CSO Not discharging
Yorkshire Water · into Trib Main Drain River Hertford · 31.6 km by river above Low Marishes · 2025: 65 spills, 194 h - Hunmanby Sewage Treatment Works - T Not discharging
Yorkshire Water · into Trib Of River Hertford · 31.5 km by river above Low Marishes · 2025: 23 spills, 155 h - Ayton Footbridge SSO Not discharging
Yorkshire Water · into River Derwent · 26.3 km by river above Low Marishes · 2025: 13 spills, 13 h - Carr Lane East Ayton CSO Not discharging
Yorkshire Water · into River Derwent · 25.6 km by river above Low Marishes · 2025: 3 spills, 4.0 h - Seamer Sewage Treatment Works Not discharging
Yorkshire Water · into Seamer Drain · 22.5 km by river above Low Marishes · 2025: 5 spills, 36 h - Sherburn SSO Not discharging
Yorkshire Water · into East Beck · 15.2 km by river above Low Marishes · 2025: 6 spills, 2.8 h - Sherburn Wpc Works Not discharging
Yorkshire Water · into Sherburn Beck · 14.7 km by river above Low Marishes · 2025: 14 spills, 27 h - Eastgate CSO Not discharging
Yorkshire Water · into Outgang Drain · 10.1 km by river above Low Marishes · 2025: 7 spills, 2.0 h - Allerston Sewage Pumping Station Not discharging
Yorkshire Water · into Allerston Beck · 9.0 km by river above Low Marishes · 2025: 5 spills, 75 h - Ebberston SPS Not discharging
Yorkshire Water · into Ebberston Beck · 9.0 km by river above Low Marishes · 2025: 21 spills, 26 h - Stone Bridge No 2 CSO Not discharging
Yorkshire Water · into Thornton Beck · 7.5 km by river above Low Marishes · 2025: 2 spills, 0.5 h - Thornton Le Dale STW Not discharging
Yorkshire Water · into Thornton Beck · 6.0 km by river above Low Marishes · 2025: 11 spills, 79 h
River Rye, above Nessjoins the Derwent above Malton, A64 Road Bridge2 overflows
- Sawmill Lane CSO Not discharging
Yorkshire Water · into River Rye · 15.0 km by river above Ness · 2025: 25 spills, 37 h - Helmsley Sewage Treatment Works Not discharging
Yorkshire Water · into River Rye · 13.8 km by river above Ness · 2025: 50 spills, 209 h
River Rye, above Howe Bridgejoins the Derwent above Malton, A64 Road Bridge10 overflows
- Ampleforth Village STW Not discharging
Yorkshire Water · into Holbeck · 29.4 km by river above Howe Bridge · 2025: 48 spills, 712 h - Tbc When Permit Issued Not discharging
Yorkshire Water · into Holbeck · 24.4 km by river above Howe Bridge · 2025: 14 spills, 99 h - Hovingham Sewage Treatment Works Not discharging
Yorkshire Water · into Unnamed Trib Of Marrs Beck · 20.0 km by river above Howe Bridge · 2025: 3 spills, 10 h - Railway Street SPS Not discharging
Yorkshire Water · into Wath Beck · 16.9 km by river above Howe Bridge · 2025: 2 spills, 4.5 h - Normanby Sewage Pumping Station Not discharging
Yorkshire Water · into Unnamed Trib Of River Seven · 15.8 km by river above Howe Bridge · 2025: 2 spills, 22 h - Great Barugh Sewage Treatment Works Not discharging
Yorkshire Water · into Unnamed Trib Of The Seven · 12.1 km by river above Howe Bridge · 2025: 41 spills, 463 h - Pickering Sewage Treatment Works Not discharging
Yorkshire Water · into Costa Beck · 11.9 km by river above Howe Bridge · 2025: 33 spills, 113 h - Pickering Sewage Treatment Works Not discharging
Yorkshire Water · into Costa Beck · 11.9 km by river above Howe Bridge · 2025: 9 spills, 7.5 h - Tbc When Permit Issued Not discharging
Yorkshire Water · into Trib Of River Seven · 11.0 km by river above Howe Bridge · 2025: 45 spills, 421 h - Kirby Misperton STW Not discharging
Yorkshire Water · into Costa Beck · 5.7 km by river above Howe Bridge · 2025: 56 spills, 843 h
Pickering Beck, above Pickering, Ings Bridgejoins the Rye1 overflow
- CSO & Pumping Station Not discharging
Yorkshire Water · into The Pickering Beck · 2.4 km by river above Pickering, Ings Bridge · 2025: 0 spills, 0 h
River Dove, above Kirkby Millsjoins the Rye4 overflows
- Sportsfield No2 CSO Not discharging
Yorkshire Water · into River Dove · 610 m by river above Kirkby Mills · 2025: 1 spill, 0.3 h - Kirkby Moorside No.2 CSO Not discharging
Yorkshire Water · into River Dove · 490 m by river above Kirkby Mills · 2025: 84 spills, 267 h - Kirkbymoorside STW Not discharging
Yorkshire Water · into River Dove · 180 m by river above Kirkby Mills · 2025: 9 spills, 52 h - Kirkby Mills Sewage Pumping Station Not discharging
Yorkshire Water · into River Dove · 180 m by river above Kirkby Mills · 2025: 0 spills, 0 h
River Seven, above Normanbyjoins the Rye2 overflows
Between Malton, A64 Road Bridge and Malton9 overflows
- Lascelles Lane SPS Not discharging
Yorkshire Water · into River Derwent · 2.1 km by river above Malton · 2025: 31 spills, 38 h - Town Street Malton CSO Not discharging
Yorkshire Water · into River Derwent · 2.0 km by river above Malton · 2025: 0 spills, 0 h - Malton Holmesfield SPS Not discharging
Yorkshire Water · into River Derwent · 610 m by river above Malton · 2025: 88 spills, 23 h - Castlegate Sewage Pumping Station Not discharging
Yorkshire Water · into River Derwent · 450 m by river above Malton · 2025: 20 spills, 403 h - Malton Norton SPS Not discharging
Yorkshire Water · into Culverted Mill Beck · 430 m by river above Malton · 2025: 90 spills, 1,040 h - Norton Church Street CSO Not discharging
Yorkshire Water · into River Derwent · 410 m by river above Malton · 2025: 54 spills, 113 h - Sheepfoot Hill CSO Not discharging
Yorkshire Water · into River Derwent · 220 m by river above Malton · 2025: 6 spills, 92 h - Chandlers Wharf SPS Not discharging
Yorkshire Water · into River Derwent · 210 m by river above Malton · 2025: 23 spills, 224 h - Hawkswell Lane CSO Not discharging
Yorkshire Water · into River Derwent · 100 m by river above Malton · 2025: 5 spills, 1.2 h
Mill Beck, above Norton Mill Beck Screenjoins the Derwent above Malton2 overflows
- St Peters Street CSO Not discharging
Yorkshire Water · into Mill Beck · 170 m by river above Norton Mill Beck Screen · 2025: 14 spills, 4.5 h - Welham Road South CSO Not discharging
Yorkshire Water · into Mill Beck · 120 m by river above Norton Mill Beck Screen · 2025: 2 spills, 0.7 h
Priorpot Beck, above Norton Priorpot Beck PSjoins the Derwent above Malton4 overflows
- Reeton Terrace No 1 CSO Not discharging
Yorkshire Water · into Priorpot Beck · 440 m by river above Norton Priorpot Beck PS · 2025: 0 spills, 0 h - Reeton Terrace No 2 CSO Not discharging
Yorkshire Water · into Priorpot Beck · 420 m by river above Norton Priorpot Beck PS · 2025: 2 spills, 0.5 h - Priorpot Bridge CSO Not discharging
Yorkshire Water · into Priorpot Beck · 290 m by river above Norton Priorpot Beck PS · 2025: 0 spills, 0 h - Balaclava No. 2 SPS Not discharging
Yorkshire Water · into Priorpot Beck · 140 m by river above Norton Priorpot Beck PS · 2025: 0 spills, 0 h
Between Malton and Kirkham Sluices6 overflows
- Wheelgate CSO Not discharging
Yorkshire Water · into River Derwent · 10.7 km by river above Kirkham Sluices · 2025: 46 spills, 57 h - Old Maltongate CSO Not discharging
Yorkshire Water · into The River Derwent · 10.6 km by river above Kirkham Sluices · 2025: 2 spills, 0.1 h - Yorkersgate Combined Sewer Overflow Not discharging
Yorkshire Water · into River Derwent · 10.5 km by river above Kirkham Sluices · 2025: 0 spills, 0 h - The Brows CSO Not discharging
Yorkshire Water · into River Derwent · 9.9 km by river above Kirkham Sluices · 2025: 0 spills, 0 h - Malton Sewage Treatment Works Not discharging
Yorkshire Water · into The River Derwent · 9.0 km by river above Kirkham Sluices · 2025: 35 spills, 419 h - Coneysthorpe Sewage Treatment Works Not discharging
Yorkshire Water · into Mill Hills Beck · 7.9 km by river above Kirkham Sluices · 2025: 15 spills, 237 h
Between Kirkham Sluices and Buttercrambe3 overflows
- Foston STW Not discharging
Yorkshire Water · into Spital Beck · 10.6 km by river above Buttercrambe · 2025: 36 spills, 274 h - Acklam Sewage Treatment Works Not discharging
Yorkshire Water · into Acklam Beck · 7.8 km by river above Buttercrambe · 2025: 38 spills, 416 h - Rectory Farm Sewage Pumping Station Not discharging
Yorkshire Water · into Unnamed Trib Of Derwent · 1.8 km by river above Buttercrambe · 2025: 5 spills, 34 h
Between Buttercrambe and Stamford Bridge3 overflows
Between Stamford Bridge and Elvington Sluices2 overflows
- Stamford Bridge North SPS Not discharging
Yorkshire Water · into River Derwent · 10.3 km by river above Elvington Sluices · 2025: 62 spills, 1,110 h - Stamford Bridge SPS Not discharging
Yorkshire Water · into River Derwent · 10.3 km by river above Elvington Sluices · 2025: 38 spills, 345 h
Between Elvington Sluices and Bubwith Bridge2 overflows
- Barmby Moor SPS CSO Not discharging
Yorkshire Water · into Unnamed Trib Of Black Dike · 21.0 km by river above Bubwith Bridge · 2025: 94 spills, 788 h - Elvington Beck SPS Not discharging
Yorkshire Water · into Elvington Beck · 13.7 km by river above Bubwith Bridge · 2025: 58 spills, 841 h
Bielby Beck, above Thornton Lockjoins the Derwent above Bubwith Bridge5 overflows
- Nunburnholme STW Not discharging
Yorkshire Water · into Nunburnholme Beck · 11.6 km by river above Thornton Lock · 2025: 30 spills, 462 h - St Peters Close CSO Not discharging
Yorkshire Water · into Pocklington Beck · 9.6 km by river above Thornton Lock · 2025: 9 spills, 4.0 h - George Street Pocklington CSO Not discharging
Yorkshire Water · into Pocklington Beck · 9.4 km by river above Thornton Lock · 2025: 4 spills, 1.3 h - Pocklington Sewage Treatment Works Not discharging
Yorkshire Water · into Pocklington Beck · 7.6 km by river above Thornton Lock · 2025: 30 spills, 176 h - Hayton Sewage Treatment Works Not discharging
Yorkshire Water · into Hayton Beck · 7.4 km by river above Thornton Lock · 2025: 10 spills, 24 h
Pocklington Beck, above Pocklingtonjoins Bielby Beck1 overflow
- Spring Lane SPS Not discharging
Yorkshire Water · into Trib Of Millington Beck · 4.1 km by river above Pocklington · 2025: 0 spills, 0 h
Blackfoss Beck, above Sandhill Bridgejoins the Derwent above Bubwith Bridge1 overflow
Near these gauges, connection not known
Within 3 km of one of the Derwent’s gauges in a straight line, but the river map cannot say whether their water reaches it.
- Sutton On Derwent SPS Not discharging
Yorkshire Water · into Unnamed Trib Of Derwent · 590 m from Elvington Sluices in a straight line · no mapped watercourse close enough to be sure · 2025: 1 spill, 11 h - Crambe STW Not discharging
Yorkshire Water · into Unnamed Trib Of River Derwent · 950 m from Kirkham Sluices in a straight line · no mapped watercourse close enough to be sure · 2025: 11 spills, 64 h - South Farm Sewage Pumping Station Not discharging
Yorkshire Water · into The Goit Via A Culvertedsystem · 1.2 km from Buttercrambe in a straight line · reaches the river through a sewer or culvert · 2025: 42 spills, 339 h - Main Road SPS Not discharging
Yorkshire Water · into West Linelands South Drain · 1.4 km from Bubwith Bridge in a straight line · no mapped watercourse close enough to be sure · 2025: 0 spills, 0 h - Cloverley Close SPS No live feed
Yorkshire Water · into Surface Water Sewer To Ditch · 1.7 km from Elvington Sluices in a straight line · its watercourse is not on the river map · 2025: 0 spills, 0 h - Hemingbrough Wpc Works No live feed
Yorkshire Water · into Old Course Of River Ouse · 1.7 km from Barmby in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 0 spills, 0 h - Firby Sewage Treatment Works Not discharging
Yorkshire Water · into Unnamed Trib Of Derwent · 1.8 km from Kirkham Sluices in a straight line · no mapped watercourse close enough to be sure · 2025: 0 spills, 0 h - Hemingbrough Wpc Works Not discharging
Yorkshire Water · into River Ouse (Tidal) · 1.8 km from Barmby in a straight line · discharges to the sea, an estuary or tidal water · 2025: 26 spills, 113 h - Tbc When Permit Issued No live feed
Yorkshire Water · into Howl Beck · 2.3 km from Kirkham Sluices in a straight line · its watercourse is not on the river map · 2025: 69 spills, 714 h - Asselby Combined Sewer Overflow Not discharging
Yorkshire Water · into Unnamed Trib Of River Ouse · 2.3 km from Loftsome Bridge in a straight line · its watercourse is not on the river map · 2025: 48 spills, 252 h - Howsham Sewage Treatment Works Not discharging
Yorkshire Water · into Unnamed Trib Of River Derwent · 2.7 km from Kirkham Sluices in a straight line · no mapped watercourse close enough to be sure · 2025: 31 spills, 372 h - Newton On Derwent SPS Not discharging
Yorkshire Water · into Birker Goit (Un-Named Trib) · 2.7 km from Elvington Sluices in a straight line · its watercourse is not on the river map · 2025: 23 spills, 99 h - Wheldrake SPS Not discharging
Yorkshire Water · into Ditch · 3.0 km from Elvington Sluices in a straight line · no mapped watercourse close enough to be sure · 2025: 21 spills, 114 h
River Derwent — Derbyshire Derwent
163 storm overflows are traced upstream of Church Wilne, the Derwent’s lowest gauge on the river map: on the Derwent itself, on its gauged tributaries, and on smaller streams that join above there.
- 0 report discharging now
- 158 not discharging
- 5 offline or silent: 0 monitor offline, 0 status unknown, 5 no live feed
Official figures for 2025, for the overflows traced upstream of Church Wilne: 4,322 spills over 29,132 hours in total, across the 160 that have a figure. 1 had no usable monitor data that year; 2 have no 2025 figure.
Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Derwent includes the smaller streams that join it there. Every overflow traced is listed here, each stretch in full. Back to the short lists →
Between Yorkshire Bridge and Mytham Bridge7 overflows
- Edale Sewage Treatment Works Not discharging
Severn Trent Water · into River Noe · 14.3 km by river above Mytham Bridge · 2025: 20 spills, 217 h - Old Sewage Works CSO Not discharging
Severn Trent Water · into Peakshole Water · 6.9 km by river above Mytham Bridge · 2025: 2 spills, 0.3 h - Sewage Pumping Station At Hope Not discharging
Severn Trent Water · into River Noe · 4.7 km by river above Mytham Bridge · 2025: 8 spills, 81 h - Bradwell Sewage Treatment Works Not discharging
Severn Trent Water · into Bradwell Brook · 4.2 km by river above Mytham Bridge · 2025: 71 spills, 1,109 h - Carbolite CSO Not discharging
Severn Trent Water · into Trib Of River Derwent · 1.7 km by river above Mytham Bridge · 2025: 23 spills, 41 h - The Railway Line CSO Not discharging
Severn Trent Water · into River Derwent · 1.1 km by river above Mytham Bridge · 2025: 67 spills, 338 h - Bamford - Rose Gardens Terminal PS Not discharging
Severn Trent Water · into River Noe · 1.1 km by river above Mytham Bridge · 2025: 52 spills, 690 h
Between Mytham Bridge and Chatsworth6 overflows
- Hathersage Mill Lane CSO Not discharging
Severn Trent Water · into Hood Brook · 16.1 km by river above Chatsworth · 2025: 6 spills, 4.4 h - Hathersage STW Not discharging
Severn Trent Water · into River Derwent · 14.4 km by river above Chatsworth · 2025: 58 spills, 452 h - Calver - Sheffield Road CSO Not discharging
Severn Trent Water · into Dale Brook · 9.2 km by river above Chatsworth · 2025: 9 spills, 27 h - Baslow-Church Lane(Car Park) SPS Not discharging
Severn Trent Water · into Bar Brook · 4.2 km by river above Chatsworth · 2025: 4 spills, 43 h - Baslow STW Not discharging
Severn Trent Water · into River Derwent · 3.8 km by river above Chatsworth · 2025: 86 spills, 915 h - Endsor Sewage P S Not discharging
Severn Trent Water · into River Derwent · 1.4 km by river above Chatsworth · 2025: 8 spills, 20 h
Between Chatsworth and Matlock39 overflows
- The Post Office CSO Not discharging
Severn Trent Water · into River Wye · 23.4 km by river above Matlock · 2025: 57 spills, 728 h - Ashford - Buxton Road (CSO) Not discharging
Severn Trent Water · into River Wye · 23.2 km by river above Matlock · 2025: 42 spills, 642 h - Baslow Road CSO Not discharging
Severn Trent Water · into River Wye (Tributary) · 20.8 km by river above Matlock · 2025: 16 spills, 47 h - Haddon Road Ppg Stn - Stm/Emeg O.f Not discharging
Severn Trent Water · into River Wye · 18.7 km by river above Matlock · 2025: 47 spills, 173 h - Market Street CSO Not discharging
Severn Trent Water · into River Wye · 18.2 km by river above Matlock · 2025: 0 spills, 0 h - King Street Combined Sewer Overflow Not discharging
Severn Trent Water · into River Wye · 18.2 km by river above Matlock · 2025: 32 spills, 51 h - North Church Street CSO Not discharging
Severn Trent Water · into River Wye · 18.2 km by river above Matlock · 2025: 12 spills, 2.0 h - Bowers Hall CSO Not discharging
Severn Trent Water · into River Lathkill · 15.2 km by river above Matlock · 2025: 54 spills, 262 h - Beeley (SSO) Not discharging
Severn Trent Water · into Beeley Brook · 14.2 km by river above Matlock · 2025: 8 spills, 21 h - Bakewell Sewage Treatment Works Not discharging
Severn Trent Water · into Tributary Of River Wye · 13.3 km by river above Matlock · 2025: 57 spills, 969 h - School Lane Terminal PS Not discharging
Severn Trent Water · into River Wye · 11.5 km by river above Matlock · 2025: 0 spills, 0 h - Northwood Lane CSO Not discharging
Severn Trent Water · into Trib Of River Derwent · 10.4 km by river above Matlock · 2025: 4 spills, 0.9 h - Dale Road North (Rlwy) CSO Not discharging
Severn Trent Water · into River Derwent · 10.0 km by river above Matlock · 2025: 44 spills, 178 h - Dale Road North CSO Not discharging
Severn Trent Water · into River Derwent · 10.0 km by river above Matlock · 2025: 71 spills, 315 h - Darley Dale - Church Road (CSO) Not discharging
Severn Trent Water · into River Derwent · 7.6 km by river above Matlock · 2025: 32 spills, 51 h - Two Dales - Chesterfield Rd CSO Not discharging
Severn Trent Water · into Warney Brook · 7.3 km by river above Matlock · 2025: 15 spills, 14 h - Two Dales - Chesterfield Road CSO Not discharging
Severn Trent Water · into Warney Brook · 7.3 km by river above Matlock · 2025: 3 spills, 0.6 h - Darley Bridge CSO Not discharging
Severn Trent Water · into River Derwent · 7.0 km by river above Matlock · 2025: 52 spills, 218 h - CSO @ Darley Bridge Pumping Station Not discharging
Severn Trent Water · into River Derwent · 6.9 km by river above Matlock · 2025: 63 spills, 299 h - Darley Dale / Dale Road North CSO Not discharging
Severn Trent Water · into Warney Brook · 6.8 km by river above Matlock · 2025: 14 spills, 8.6 h - Two Dales Garage CSO Not discharging
Severn Trent Water · into Warney Brook · 6.8 km by river above Matlock · 2025: 7 spills, 13 h - Two Dales - Greenway/Oddford Ln CSO Not discharging
Severn Trent Water · into Warney Brook · 6.4 km by river above Matlock · 2025: 6 spills, 1.0 h - Darley Dale - Four Ends SPS Not discharging
Severn Trent Water · into River Derwent · 6.1 km by river above Matlock · 2025: 16 spills, 70 h - Station Road CSO Not discharging
Severn Trent Water · into River Derwent · 6.1 km by river above Matlock · 2025: 6 spills, 0.9 h - Dale Rd South-Off Old Hackney Lane Not discharging
Severn Trent Water · into River Derwent · 5.1 km by river above Matlock · 2025: 25 spills, 70 h - Snitterton - Snitterton Road (SSO) Not discharging
Severn Trent Water · into River Derwent · 4.1 km by river above Matlock · 2025: 21 spills, 110 h - Darley Dale No 11 CSO Not discharging
Severn Trent Water · into River Derwent · 3.5 km by river above Matlock · 2025: 84 spills, 804 h - Wold Reservoir & Matlock Bank - Sws No live feed
Severn Trent Water · into Bentley Brook (River Derwent) · 3.5 km by river above Matlock · 2024: 0 spills, 0 h - Websters Terrace CSO Not discharging
Severn Trent Water · into Bentley Brook · 2.3 km by river above Matlock · 2025: 22 spills, 51 h - Bakewell Road / Dimple Road CSO Not discharging
Severn Trent Water · into River Derwent · 2.3 km by river above Matlock · 2025: 0 spills, 0 h - Bank Road Combined Sewer Overflow Not discharging
Severn Trent Water · into River Derwent · 2.2 km by river above Matlock · 2025: 4 spills, 1.1 h - Matlock Mh79 Udc - Imperial Road Cs Not discharging
Severn Trent Water · into River Derwent · 2.2 km by river above Matlock · 2025: 37 spills, 52 h - Lime Grove Walk/Bank Road Po CSO Not discharging
Severn Trent Water · into River Derwent · 2.0 km by river above Matlock · 2025: 61 spills, 33 h - Matlock Green/Lime Tree Rd CSO Not discharging
Severn Trent Water · into Bentley Brook · 2.0 km by river above Matlock · 2025: 1 spill, 0 h - Matlock Green_mornington Rise CSO Not discharging
Severn Trent Water · into Bentley Brook · 2.0 km by river above Matlock · 2025: 7 spills, 7.6 h - Stoney Way Combined Sewer Overflow Not discharging
Severn Trent Water · into Bentley Brook (River Derwent) · 1.7 km by river above Matlock · 2025: 32 spills, 103 h - Matlock-Knowleston Place SPS Not discharging
Severn Trent Water · into Bentley Brook (River Derwent) · 1.7 km by river above Matlock · 2025: 11 spills, 16 h - Railway Bridge/Dale Road CSO Not discharging
Severn Trent Water · into River Derwent · 1.4 km by river above Matlock · 2025: 23 spills, 87 h - Matlock Bath - Dale Road (Coal Me- Not discharging
Severn Trent Water · into River Derwent · 430 m by river above Matlock · 2025: 118 spills, 977 h
River Wye, above Buxtonjoins the Derwent above Matlock2 overflows
River Wye, above Ashford in the Waterjoins the Derwent above Matlock2 overflows
Between Matlock and Derby City56 overflows
- Matlock Bath-Dale Road CSO No live feed
Severn Trent Water · into River Derwent · 31.1 km by river above Derby City · 2025: no data - Cromford Meadows-Railway Bridge CSO Not discharging
Severn Trent Water · into River Derwent · 28.2 km by river above Derby City · 2025: 0 spills, 0 h - Cromford Meadows-Pipe Bridge CSO Not discharging
Severn Trent Water · into River Derwent · 27.5 km by river above Derby City · 2025: 0 spills, 0 h - Padley Hall CSO Not discharging
Severn Trent Water · into The Hartshay Brook · 27.1 km by river above Derby City · 2025: 63 spills, 216 h - Toll Road Combined Sewer Overflow Not discharging
Severn Trent Water · into Hartshay Brook · 27.1 km by river above Derby City · 2025: 55 spills, 184 h - Holloway - Lea Road CSO Not discharging
Severn Trent Water · into Lea Brook · 26.7 km by river above Derby City · 2025: 25 spills, 51 h - Matlock Lea STW Not discharging
Severn Trent Water · into River Derwent · 26.4 km by river above Derby City · 2025: 77 spills, 1,282 h - Ripley Sewage Treatment Works Not discharging
Severn Trent Water · into Hartshay Brook · 25.9 km by river above Derby City · 2025: 47 spills, 412 h - Homesford Sewage Pumping Stn Not discharging
Severn Trent Water · into River Derwent · 25.2 km by river above Derby City · 2025: 9 spills, 5.8 h - Whatstandwell STW Not discharging
Severn Trent Water · into River Derwent · 22.6 km by river above Derby City · 2025: 58 spills, 987 h - Ambergate (Hagwood) Pumping St Not discharging
Severn Trent Water · into River Amber · 21.4 km by river above Derby City · 2025: 19 spills, 47 h - Ambergate STW Not discharging
Severn Trent Water · into River Amber · 20.8 km by river above Derby City · 2025: 21 spills, 203 h - Ambergate Pumping Station Not discharging
Severn Trent Water · into River Amber · 20.1 km by river above Derby City · 2025: 23 spills, 171 h - Derby Road/Newbridge Road Jct CSO Not discharging
Severn Trent Water · into River Derwent · 19.5 km by river above Derby City · 2025: 0 spills, 0 h - Ambergate PS - Storm/Emergency O/F Not discharging
Severn Trent Water · into River Derwent · 18.9 km by river above Derby City · 2025: 30 spills, 183 h - Bridge Street CSO Not discharging
Severn Trent Water · into Tributary Of River Derwent · 15.5 km by river above Derby City · 2025: 35 spills, 20 h - Bridge Foot Combined Sewer Overflow Not discharging
Severn Trent Water · into Tributary Of River Derwent · 15.5 km by river above Derby City · 2025: 18 spills, 58 h - Bridge Street-Field Lane Jcn CSO Not discharging
Severn Trent Water · into Tributary Of River Derwent · 15.5 km by river above Derby City · 2025: 11 spills, 2.5 h - Belper - Belper Lane (CSO) Not discharging
Severn Trent Water · into River Derwent · 15.5 km by river above Derby City · 2025: 0 spills, 0 h - Areas Milford & Belper/Sm & Em O/F Not discharging
Severn Trent Water · into River Derwent · 15.2 km by river above Derby City · 2025: 2 spills, 0.5 h - Areas Milford & Belper/Sm & Em O/F Not discharging
Severn Trent Water · into River Derwent · 15.1 km by river above Derby City · 2025: 16 spills, 49 h - King St-Strutt St CSO Not discharging
Severn Trent Water · into Coppice Brook · 14.5 km by river above Derby City · 2025: 0 spills, 0 h - Off Church Street CSO Not discharging
Severn Trent Water · into Bottle Brook · 14.4 km by river above Derby City · 2025: 5 spills, 18 h - Derby Rd-Gibfield Ln CSO Not discharging
Severn Trent Water · into Coppice Brook · 14.3 km by river above Derby City · 2025: 14 spills, 4.1 h - Derby Road CSO Not discharging
Severn Trent Water · into River Derwent · 14.1 km by river above Derby City · 2025: 4 spills, 0.6 h - Bridge Hill/Belper Lane CSO Not discharging
Severn Trent Water · into River Derwent · 14.1 km by river above Derby City · 2025: 46 spills, 31 h - The Fleet Combined Sewer Overflow Not discharging
Severn Trent Water · into River Derwent · 14.1 km by river above Derby City · 2025: 2 spills, 0.3 h - Areas Milford & Belper/Sm & Em O/F Not discharging
Severn Trent Water · into River Derwent · 13.9 km by river above Derby City · 2025: 15 spills, 18 h - Ryknield Road CSO Not discharging
Severn Trent Water · into Bottle Brook · 13.8 km by river above Derby City · 2025: 0 spills, 0 h - Belper Sewage Treatment Works Not discharging
Severn Trent Water · into River Derwent · 13.7 km by river above Derby City · 2025: 44 spills, 374 h - Smalley - Main Road CSO Not discharging
Severn Trent Water · into Tributary Of Park Brook · 13.7 km by river above Derby City · 2025: 2 spills, 0.6 h - Hazelwood - Nether Lane SPS Not discharging
Severn Trent Water · into Trib. Of River Ecclesbourne · 13.6 km by river above Derby City · 2025: 22 spills, 164 h - Areas Milford & Belper/Sm & Em O/F Not discharging
Severn Trent Water · into River Derwent · 12.8 km by river above Derby City · 2025: 32 spills, 78 h - Derby Road Not discharging
Severn Trent Water · into River Derwent · 12.6 km by river above Derby City · 2025: 31 spills, 60 h - Kilburn - Derby Rd/Bywell Ln CSO Not discharging
Severn Trent Water · into Bottle Brook · 12.6 km by river above Derby City · 2025: 1 spill, 0.3 h - Areas Milford & Belper/Sm & Em O/F Not discharging
Severn Trent Water · into River Derwent · 11.8 km by river above Derby City · 2025: 8 spills, 8.7 h - Areas Milford & Belper/Sm & Em O/F Not discharging
Severn Trent Water · into River Derwent · 11.2 km by river above Derby City · 2025: 25 spills, 27 h - Tants Meadow Not discharging
Severn Trent Water · into Bottle Brook · 11.1 km by river above Derby City · 2025: 30 spills, 177 h - Lower Kilburn - Derby Road (CSO) Not discharging
Severn Trent Water · into Bottle Brook · 11.1 km by river above Derby City · 2025: 37 spills, 59 h - Kilburn STW Not discharging
Severn Trent Water · into Bottle Brook · 11.1 km by river above Derby City · 2025: 45 spills, 345 h - Castle Orchard CSO Not discharging
Severn Trent Water · into River Derwent · 10.1 km by river above Derby City · 2025: 4 spills, 6.2 h - Castle Orchard Pumping Station Not discharging
Severn Trent Water · into River Derwent · 10.1 km by river above Derby City · 2025: 0 spills, 0 h - Kilburn - Rawson Green 4 (CSO) Not discharging
Severn Trent Water · into Park/Bottle Brook · 9.4 km by river above Derby City · 2025: 3 spills, 2.4 h - Horsley Woodhouse - Chestnut Close (CSO) Not discharging
Severn Trent Water · into Park/Bottle Brook · 9.4 km by river above Derby City · 2025: 1 spill, 0.5 h - Kilburn - Derby Road 211 (CSO) Not discharging
Severn Trent Water · into Park/Bottle Brook · 9.4 km by river above Derby City · 2025: 1 spill, 0.4 h - Smalley- Smalley Mill Road (CSO) Not discharging
Severn Trent Water · into Park/Bottle Brook · 9.4 km by river above Derby City · 2025: 18 spills, 32 h - Opposite The Lodge CSO Not discharging
Severn Trent Water · into River Derwent · 8.9 km by river above Derby City · 2025: 32 spills, 103 h - Storm Sewage Overflow Alfreton Road Not discharging
Severn Trent Water · into Bottle Brook · 7.3 km by river above Derby City · 2025: 0 spills, 0 h - Duffield STW Not discharging
Severn Trent Water · into River Derwent · 6.8 km by river above Derby City · 2025: 57 spills, 657 h - Allestree Sewage Pumping Station Not discharging
Severn Trent Water · into Trib Of River Derwent · 6.7 km by river above Derby City · 2025: 3 spills, 8.9 h - Little Eaton - Duffield Road (SSO) Not discharging
Severn Trent Water · into Bottle Brook · 6.2 km by river above Derby City · 2025: 0 spills, 0 h - Little Eaton SPS - Stm/Emergency Of Not discharging
Severn Trent Water · into Bottle Brook · 6.0 km by river above Derby City · 2025: 0 spills, 0 h - CSO At Site Of Allestree WRW Not discharging
Severn Trent Water · into River Derwent · 3.0 km by river above Derby City · 2025: 41 spills, 113 h - Darley Abbey CSO Not discharging
Severn Trent Water · into River Derwent · 1.9 km by river above Derby City · 2025: 8 spills, 13 h - Darley Abbey CSO Not discharging
Severn Trent Water · into River Derwent · 1.9 km by river above Derby City · 2025: 25 spills, 26 h - Darley Abbey/Allestree Sw-Stm/Emg Not discharging
Severn Trent Water · into River Derwent · 1.7 km by river above Derby City · 2025: 0 spills, 0 h
River Amber, above Wingfield Parkjoins the Derwent above Derby City23 overflows
- Kelstedge Sewage Treatment Works Not discharging
Severn Trent Water · into River Amber · 16.1 km by river above Wingfield Park · 2025: 75 spills, 207 h - Springwell Street CSO Not discharging
Severn Trent Water · into Nunn Brook · 15.0 km by river above Wingfield Park · 2025: 0 spills, 0 h - Sutton In Ashfield - Cross Lane (CSO) Not discharging
Severn Trent Water · into Nunn Brook · 15.0 km by river above Wingfield Park · 2025: 3 spills, 0.6 h - Huthwaite Sewage Treatment Works Not discharging
Severn Trent Water · into Nunn Brook · 15.0 km by river above Wingfield Park · 2025: 67 spills, 261 h - Huthwaite Sewage Treatment Works Not discharging
Severn Trent Water · into Nunn Brook · 15.0 km by river above Wingfield Park · 2025: 29 spills, 317 h - Ashover STW Not discharging
Severn Trent Water · into River Amber · 14.8 km by river above Wingfield Park · 2025: 49 spills, 870 h - Ashover STW Not discharging
Severn Trent Water · into River Amber · 14.8 km by river above Wingfield Park · 2025: 103 spills, 911 h - Hilcote - New Lane SPS Not discharging
Severn Trent Water · into Normanton Brook · 13.1 km by river above Wingfield Park · 2025: 8 spills, 38 h - Stonebroom Blocks CSO Not discharging
Severn Trent Water · into Morton Brook · 13.0 km by river above Wingfield Park · 2025: 0 spills, 0 h - Morton - Station Road (SSO) Not discharging
Severn Trent Water · into Westwood Brook · 12.8 km by river above Wingfield Park · 2025: 0 spills, 0 h - South Normanton STW Not discharging
Severn Trent Water · into Alfreton Brook · 12.8 km by river above Wingfield Park · 2025: 53 spills, 949 h - Westwood Brook STW Not discharging
Severn Trent Water · into Morton Brook · 12.1 km by river above Wingfield Park · 2025: 61 spills, 529 h - Bacon Springs CSO Not discharging
Severn Trent Water · into Smithy Brook · 11.7 km by river above Wingfield Park · 2025: 52 spills, 313 h - Clay Cross Sewage Treatment Works Not discharging
Severn Trent Water · into Smithy Brook · 11.7 km by river above Wingfield Park · 2025: 60 spills, 569 h - Wood Street No live feed
Severn Trent Water · into Trib Of Alfreton Brook · 10.2 km by river above Wingfield Park · 2024: 0 spills, 0 h - Ogston WTW CSO Not discharging
Severn Trent Water · into River Amber · 9.3 km by river above Wingfield Park · 2025: 80 spills, 986 h - Elms Estate CSO Not discharging
Severn Trent Water · into Alfreton Brook · 8.4 km by river above Wingfield Park · 2025: 16 spills, 33 h - Alfreton Sewage Treatment Works Not discharging
Severn Trent Water · into Alfreton Brook · 8.4 km by river above Wingfield Park · 2025: 30 spills, 323 h - Alfreton Sewage Treatment Works Not discharging
Severn Trent Water · into Alfreton Brook · 8.4 km by river above Wingfield Park · 2025: 54 spills, 214 h - Wessington Pumping Station Not discharging
Severn Trent Water · into River Amber · 7.0 km by river above Wingfield Park · 2025: 68 spills, 1,211 h - South Wingfield - Holm Lane SPS Not discharging
Severn Trent Water · into River Amber · 4.1 km by river above Wingfield Park · 2025: 28 spills, 254 h - South Wingfield - Holm Lane SPS Not discharging
Severn Trent Water · into River Amber · 4.1 km by river above Wingfield Park · 2025: 31 spills, 198 h - South Wingfield - Holm Lane SPS Not discharging
Severn Trent Water · into River Amber · 3.4 km by river above Wingfield Park · 2025: 23 spills, 90 h
River Ecclesbourne, above Duffieldjoins the Derwent above Derby City2 overflows
Between Derby City and Church Wilne18 overflows
- Meadow Road SPS Not discharging
Severn Trent Water · into River Derwent · 16.9 km by river above Church Wilne · 2025: 1 spill, 1.2 h - Station Approach CSO Not discharging
Severn Trent Water · into River Derwent · 16.4 km by river above Church Wilne · 2025: 30 spills, 61 h - Chaddesden Park Rd/Mayfield Rd CSO Not discharging
Severn Trent Water · into Chaddesden Brook · 15.8 km by river above Church Wilne · 2025: 25 spills, 7.3 h - Durham Avenue/Suffolk Avenue CSO Not discharging
Severn Trent Water · into Chaddesden Brook · 15.8 km by river above Church Wilne · 2025: 22 spills, 8.0 h - Nottingham Rd/The Crescent Jcn CSO Not discharging
Severn Trent Water · into Chaddesden Brook · 15.8 km by river above Church Wilne · 2025: 17 spills, 16 h - John Berrysford Close CSO Not discharging
Severn Trent Water · into Chaddesden Brook · 15.4 km by river above Church Wilne · 2025: 53 spills, 134 h - Derby - Wayzgoose Drive (CSO) Not discharging
Severn Trent Water · into River Derwent · 15.3 km by river above Church Wilne · 2025: 20 spills, 46 h - Derby - Eastgate/Pentagon Island (CSO) Not discharging
Severn Trent Water · into River Derwent · 15.3 km by river above Church Wilne · 2025: 15 spills, 84 h - Wilmorton College/Harrow Street CSO Not discharging
Severn Trent Water · into River Derwent · 14.1 km by river above Church Wilne · 2025: 21 spills, 25 h - Derby Road CSO Not discharging
Severn Trent Water · into River Derwent · 13.9 km by river above Church Wilne · 2025: 37 spills, 56 h - Derby Sewage Treatment Works Not discharging
Severn Trent Water · into River Derwent · 13.5 km by river above Church Wilne · 2025: 49 spills, 459 h - Alvaston CSO Not discharging
Severn Trent Water · into River Derwent · 12.7 km by river above Church Wilne · 2025: 47 spills, 197 h - Anglers Lane CSO Not discharging
Severn Trent Water · into River Derwent · 9.7 km by river above Church Wilne · 2025: 7 spills, 32 h - Off Stoney Gate Road CSO Not discharging
Severn Trent Water · into River Derwent · 9.7 km by river above Church Wilne · 2025: 39 spills, 87 h - Green Lane Pumping Station Not discharging
Severn Trent Water · into River Derwent · 9.5 km by river above Church Wilne · 2025: 53 spills, 295 h - South Of Borrowash Bypass CSO Not discharging
Severn Trent Water · into Ock Brook · 9.3 km by river above Church Wilne · 2025: 22 spills, 21 h - Hawthorne Avenue CSO Not discharging
Severn Trent Water · into Ock Brook · 9.1 km by river above Church Wilne · 2025: 0 spills, 0 h - Newbold Avenue CSO Not discharging
Severn Trent Water · into Ock Brook · 8.1 km by river above Church Wilne · 2025: 21 spills, 62 h
Markeaton Brook, above Derby Bridge Streetjoins the Derwent above Church Wilne8 overflows
- Kirk Langley STW Not discharging
Severn Trent Water · into Flagshaw Brook · 7.0 km by river above Derby Bridge Street · 2025: 63 spills, 657 h - Quarndon - Church Road CSO Not discharging
Severn Trent Water · into Tributary Of Markeaton Brook · 4.8 km by river above Derby Bridge Street · 2025: 0 spills, 0 h - Markeaton Lane CSO Not discharging
Severn Trent Water · into Markeaton Brook · 2.2 km by river above Derby Bridge Street · 2025: 12 spills, 58 h - Markeaton Lane CSO Not discharging
Severn Trent Water · into Markeaton Brook · 2.2 km by river above Derby Bridge Street · 2025: 11 spills, 7.1 h - Leylands / Broadway 76 CSO Not discharging
Severn Trent Water · into Markeaton Brook · 1.3 km by river above Derby Bridge Street · 2025: 32 spills, 51 h - Markeaton St/Merchant St Jcn CSO Not discharging
Severn Trent Water · into Markeaton Brook · 530 m by river above Derby Bridge Street · 2025: 20 spills, 49 h - Shaws Green Combined Sewer Overflow Not discharging
Severn Trent Water · into Markeaton Brook · 530 m by river above Derby Bridge Street · 2025: 22 spills, 8.0 h - St. Annes Close CSO Not discharging
Severn Trent Water · into Markeaton Brook · 420 m by river above Derby Bridge Street · 2025: 25 spills, 81 h
Near these gauges, connection not known
Within 3 km of one of the Derwent’s gauges in a straight line, but the river map cannot say whether their water reaches it.
- St Peters Street/East Street CSO Not discharging
Severn Trent Water · into Markeaton Brook · 660 m from Derby City in a straight line · no mapped watercourse close enough to be sure · 2025: 7 spills, 3.9 h - Green Lane / Macklin Street CSO Not discharging
Severn Trent Water · into Markeaton Brook · 660 m from Derby City in a straight line · no mapped watercourse close enough to be sure · 2025: 3 spills, 0.3 h - Victoria Street/Friar Gate Jct CSO Not discharging
Severn Trent Water · into Markeaton Brook · 660 m from Derby City in a straight line · no mapped watercourse close enough to be sure · 2025: 2 spills, 1.3 h - Moreledge / Thorntree Lane CSO Not discharging
Severn Trent Water · into Markeaton Brook · 660 m from Derby City in a straight line · no mapped watercourse close enough to be sure · 2025: 11 spills, 4.1 h - Abbey Street CSO Not discharging
Severn Trent Water · into Littleover Brook · 830 m from Derby City in a straight line · no mapped watercourse close enough to be sure · 2025: 1 spill, 0.2 h - Uttoxeter New Rd 2/Stafford St CSO Not discharging
Severn Trent Water · into Markeaton Brook · 970 m from Derby City in a straight line · no mapped watercourse close enough to be sure · 2025: 21 spills, 13 h - Uttoxeter New Road CSO Not discharging
Severn Trent Water · into Markeaton Brook · 1.0 km from Derby City in a straight line · no mapped watercourse close enough to be sure · 2025: 1 spill, 0.1 h - Monk Street/King Alfred Street CSO Not discharging
Severn Trent Water · into Littleover Brook (Culverted) · 1.1 km from Derby City in a straight line · its watercourse is not on the river map · 2025: 1 spill, 0.1 h - Great Northern Road CSO Not discharging
Severn Trent Water · into Markeaton Brook · 1.2 km from Derby City in a straight line · no mapped watercourse close enough to be sure · 2025: 23 spills, 5.4 h - Woods Lane/Stockbrook St Jct CSO Not discharging
Severn Trent Water · into Littleover Brook · 1.2 km from Derby City in a straight line · its watercourse is not on the river map · 2025: 1 spill, 0 h - Woods Lane CSO Not discharging
Severn Trent Water · into Littleover Brook · 1.4 km from Derby City in a straight line · its watercourse is not on the river map · 2025: 0 spills, 0 h - Uttoxeter Old Rd/Junction St CSO Not discharging
Severn Trent Water · into Markeaton Brook · 1.5 km from Derby City in a straight line · no mapped watercourse close enough to be sure · 2025: 2 spills, 0.4 h - Shardlow Rectory SPS Not discharging
Severn Trent Water · into River Trent (Non-Tidal) (Trib) · 1.5 km from Church Wilne in a straight line · discharges to the sea, an estuary or tidal water · 2025: 9 spills, 46 h - Mh Near Cromford Mill Pond Not discharging
Severn Trent Water · into Receiving Water Not Defined · 1.7 km from Matlock in a straight line · no mapped watercourse close enough to be sure · 2025: 58 spills, 236 h - Cromford - Market Place CSO Not discharging
Severn Trent Water · into Tributary Of Cromford Canal · 1.7 km from Matlock in a straight line · its water cannot be followed on the map · 2025: 58 spills, 217 h
18 more near these gauges whose connection is not known.
4 other overflows within 3 km of these gauges are placed below the Derwent’s lowest gauge or on another river, so not listed.
River Derwent — Derwent West Cumbria and Duddon
36 storm overflows are traced upstream of Seaton Mill, Barepot, Workington, the Derwent’s lowest gauge on the river map: on the Derwent itself, on its gauged tributaries, and on smaller streams that join above there.
- 0 report discharging now
- 33 not discharging
- 3 offline or silent: 2 monitor offline, 1 status unknown, 0 no live feed
Official figures for 2025, for the overflows traced upstream of Seaton Mill, Barepot, Workington: 1,931 spills over 16,396 hours in total, across all 36.
Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Derwent includes the smaller streams that join it there. Every overflow traced is listed here, each stretch in full. Back to the short lists →
Above Portinscale, the Derwent’s highest gauge2 overflows
- Stonethwaite WwTW Not discharging
United Utilities · into Trib Stonethwaite Beck · 12.1 km by river above Portinscale · 2025: 39 spills, 247 h - Grange Bridge PS Gngbo All0062 Not discharging
United Utilities · into River Derwent · 7.7 km by river above Portinscale · 2025: 53 spills, 465 h
River Greta, above Riddings Woodjoins the Derwent above Portinscale1 overflow
- Threlkeld PS Not discharging
United Utilities · into River Glenderamackin · 540 m by river above Riddings Wood · 2025: 67 spills, 299 h
River Greta, above Greta Bridgejoins the Derwent above Portinscale2 overflows
- Lattings Close CSO 028nf Not discharging
United Utilities · into River Greta · 1.9 km by river above Greta Bridge · 2025: 1 spill, 0.1 h - Penrith Rd Not discharging
United Utilities · into River Greta · 1.4 km by river above Greta Bridge · 2025: 0 spills, 0 h
River Greta, above Keswick Campsitejoins the Derwent above Portinscale1 overflow
- Rawnsley Hall Pumping Station Not discharging
United Utilities · into The River Greta · 380 m by river above Keswick Campsite · 2025: 54 spills, 63 h
River Glenderamackin, above Threlkeldjoins the Greta1 overflow
- Gategill Beck M/H CSO Not discharging
United Utilities · into Gategill Beck · 820 m by river above Threlkeld · 2025: 53 spills, 104 h
Between Portinscale and Ouse Bridge7 overflows
- Thick Riggs CSO (022uy) Not discharging
United Utilities · into River Derwent · 10.6 km by river above Ouse Bridge · 2025: 6 spills, 9.3 h - A591 Bus Shelter CSO 021by Not discharging
United Utilities · into Applethwaite Gill · 10.5 km by river above Ouse Bridge · 2025: 72 spills, 551 h - Portinscale Sewage Pumping Station Not discharging
United Utilities · into Pow Beck · 10.2 km by river above Ouse Bridge · 2025: 119 spills, 558 h - Keswick STW Not discharging
United Utilities · into River Derwent · 9.5 km by river above Ouse Bridge · 2025: 77 spills, 907 h - Bassenthwaite WwTW Not discharging
United Utilities · into Halls Beck · 4.0 km by river above Ouse Bridge · 2025: 58 spills, 112 h - Embleton WwTW Not discharging
United Utilities · into Trib Dubwath Beck · 4.0 km by river above Ouse Bridge · 2025: 113 spills, 2,044 h - Dubwath Wastewater Treatment Works Not discharging
United Utilities · into Dubwath Beck · 1.7 km by river above Ouse Bridge · 2025: 12 spills, 78 h
River Cocker, above Southwaite Bridgejoins the Derwent above Kingfisher, Cockermouth1 overflow
- Lorton STW Not discharging
United Utilities · into River Cocker · 2.9 km by river above Southwaite Bridge · 2025: 10 spills, 19 h
River Cocker, above South Street Footbridgejoins the Derwent above Kingfisher, Cockermouth1 overflow
- Vicarage Lane CSO 022wd Not discharging
United Utilities · into Tom Rudd Beck · 920 m by river above South Street Footbridge · 2025: 0 spills, 0 h
Between Kingfisher, Cockermouth and Seaton Mill, Barepot, Workington20 overflows
- Rowrah Pumping Station Monitor offline
United Utilities · into Colliergate Beck · 22.6 km by river above Seaton Mill, Barepot, Workington · 2025: 73 spills, 1,274 h - Pardshaw STW Not discharging
United Utilities · into Black Beck · 19.3 km by river above Seaton Mill, Barepot, Workington · 2025: 31 spills, 54 h - Deanscales PS & CSO Not discharging
United Utilities · into Trib Of Far Stock Beck · 15.6 km by river above Seaton Mill, Barepot, Workington · 2025: 77 spills, 517 h - Bridekirk WwTW Bride Not discharging
United Utilities · into Brides Beck · 15.3 km by river above Seaton Mill, Barepot, Workington · 2025: 34 spills, 101 h - Branthwaite Pumping Station Not discharging
United Utilities · into River Marron · 14.1 km by river above Seaton Mill, Barepot, Workington · 2025: 15 spills, 29 h - Coalpit Wood CSO Not discharging
United Utilities · into Dovenby Beck · 13.8 km by river above Seaton Mill, Barepot, Workington · 2025: 22 spills, 42 h - Dovenby WwTW Doven Not discharging
United Utilities · into Dovenby Beck · 13.4 km by river above Seaton Mill, Barepot, Workington · 2025: 22 spills, 78 h - The Burroughs CSO 022uq Not discharging
United Utilities · into River Derwent · 13.1 km by river above Seaton Mill, Barepot, Workington · 2025: 50 spills, 136 h - Fitz Bridge (Low Road) CSO Not discharging
United Utilities · into River Derwent · 12.8 km by river above Seaton Mill, Barepot, Workington · 2025: 106 spills, 1,178 h - Papcastle Pumping Station (All0139) Not discharging
United Utilities · into River Derwent · 12.3 km by river above Seaton Mill, Barepot, Workington · 2025: 85 spills, 711 h - Belle Vue /Cockermouth PS Not discharging
United Utilities · into River Derwent · 12.2 km by river above Seaton Mill, Barepot, Workington · 2025: 39 spills, 122 h - Cockermouth WwTW Monitor offline
United Utilities · into River Derwent · 12.2 km by river above Seaton Mill, Barepot, Workington · 2025: 133 spills, 2,354 h - Glen House CSO Not discharging
United Utilities · into Unnamed Trib Of River Marron · 8.3 km by river above Seaton Mill, Barepot, Workington · 2025: 20 spills, 13 h - Greysouthen WwTW Not discharging
United Utilities · into Trib River Derwent · 8.1 km by river above Seaton Mill, Barepot, Workington · 2025: 97 spills, 564 h - Great Broughton WwTW Not discharging
United Utilities · into River Derwent · 8.0 km by river above Seaton Mill, Barepot, Workington · 2025: 161 spills, 1,427 h - Great Broughton WwTW Not discharging
United Utilities · into River Derwent · 8.0 km by river above Seaton Mill, Barepot, Workington · 2025: 85 spills, 417 h - Little Clifton STW Not discharging
United Utilities · into River Marron · 7.9 km by river above Seaton Mill, Barepot, Workington · 2025: 128 spills, 1,756 h - Camerton Ww Pumping Station Not discharging
United Utilities · into River Derwent · 3.5 km by river above Seaton Mill, Barepot, Workington · 2025: 3 spills, 5.9 h - Tbc Status unknown
United Utilities · into River Derwent · 2.3 km by river above Seaton Mill, Barepot, Workington · 2025: 16 spills, 162 h - Camerton WwTW Camer Not discharging
United Utilities · into River Derwent · 1.9 km by river above Seaton Mill, Barepot, Workington · 2025: 0 spills, 0 h
Near these gauges, connection not known
Within 3 km of one of the Derwent’s gauges in a straight line, but the river map cannot say whether their water reaches it.
- High Street Workington CSO Not discharging
United Utilities · into Stan Beck · 1.4 km from Seaton Mill, Barepot, Workington in a straight line · its watercourse is not on the river map · 2025: 74 spills, 154 h - Braithwaite Ww Pumping Station Not discharging
United Utilities · into Hallgarth Beck · 1.6 km from Portinscale in a straight line · no mapped watercourse close enough to be sure · 2025: 114 spills, 1,132 h - John Pier Sewage Pumping Station Not discharging
United Utilities · into River Derwent Estuary · 2.2 km from Seaton Mill, Barepot, Workington in a straight line · discharges to the sea, an estuary or tidal water · 2025: 39 spills, 133 h - Workington WwTW Not discharging
United Utilities · into Irish Sea · 2.8 km from Seaton Mill, Barepot, Workington in a straight line · discharges to the sea, an estuary or tidal water · 2025: 122 spills, 644 h - Eaglesfield WwTW Eagle Not discharging
United Utilities · into Dubbs Gutter · 3.0 km from Kingfisher, Cockermouth in a straight line · its watercourse is not on the river map · 2025: 134 spills, 1,214 h
2 other overflows within 3 km of these gauges are placed below the Derwent’s lowest gauge or on another river, so not listed.
River Derwent — Tyne and Derwent
25 storm overflows are traced upstream of Rowlands Gill, the Derwent’s lowest gauge on the river map: on the Derwent itself, on its gauged tributaries, and on smaller streams that join above there.
- 0 report discharging now
- 25 not discharging
- 0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed
Official figures for 2025, for the overflows traced upstream of Rowlands Gill: 336 spills over 919 hours in total, across all 25.
Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Derwent includes the smaller streams that join it there.
Above Eddys Bridge, the Derwent’s highest gauge1 overflow
- Blanchland STW Not discharging
Northumbrian Water · into River Derwent · 9.9 km by river above Eddys Bridge · 2025: 5 spills, 20 h
Between Eddys Bridge and Blackhall Mill13 overflows
- Opp Old Castleside STW CSO Not discharging
Northumbrian Water · into Wharnley Burn (Derwent) · 11.8 km by river above Blackhall Mill · 2025: 4 spills, 0.5 h - Dunelm Road Combined Sewer Overflow Not discharging
Northumbrian Water · into The Dene Burn · 10.9 km by river above Blackhall Mill · 2025: 0 spills, 0 h - Moorside CSO Der002 Not discharging
Northumbrian Water · into Dene Burn (River Derwent) · 10.7 km by river above Blackhall Mill · 2025: 4 spills, 1.6 h - Berry Edge Road CSO Der096 Not discharging
Northumbrian Water · into Unnamed Trib Of Dene Burn · 10.7 km by river above Blackhall Mill · 2025: 21 spills, 11 h - Castleside Not discharging
Northumbrian Water · into Dene Burn (River Derwent) · 10.4 km by river above Blackhall Mill · 2025: 8 spills, 1.8 h - Shotley Bridge CSO Der0004 Not discharging
Northumbrian Water · into Tributary Of River Derwent · 7.3 km by river above Blackhall Mill · 2025: 12 spills, 9.9 h - 20 Derwent Dale Cutlers Rd CSO Not discharging
Northumbrian Water · into River Derwent · 7.2 km by river above Blackhall Mill · 2025: 1 spill, 0 h - Green Bridge CSO (Der 137) Not discharging
Northumbrian Water · into Derwent · 6.6 km by river above Blackhall Mill · 2025: 13 spills, 39 h - Consett STW Not discharging
Northumbrian Water · into River Derwent · 4.1 km by river above Blackhall Mill · 2025: 46 spills, 305 h - Chare Bank CSO Not discharging
Northumbrian Water · into River Derwent · 3.0 km by river above Blackhall Mill · 2025: 19 spills, 18 h - Ebchester SPS Not discharging
Northumbrian Water · into River Derwent · 2.9 km by river above Blackhall Mill · 2025: 32 spills, 120 h - Vindomora Villas CSO Not discharging
Northumbrian Water · into Blackstone Burn River Derwent · 2.2 km by river above Blackhall Mill · 2025: 8 spills, 3.1 h - Derwentside House CSO Not discharging
Northumbrian Water · into Derwent · 630 m by river above Blackhall Mill · 2025: 0 spills, 0 h
Between Blackhall Mill and Rowlands Gill11 overflows
- Pont Bungalows Not discharging
Northumbrian Water · into Pont Burn (River Derwent) · 10.4 km by river above Rowlands Gill · 2025: 0 spills, 0 h - Pont Lane A CSO Not discharging
Northumbrian Water · into Pont Burn · 10.1 km by river above Rowlands Gill · 2025: 12 spills, 43 h - Pont B CSO Not discharging
Northumbrian Water · into Tributary Pont Burn · 10.1 km by river above Rowlands Gill · 2025: 13 spills, 18 h - St Ives Road CSO Not discharging
Northumbrian Water · into Trib Pont Burn · 10.0 km by river above Rowlands Gill · 2025: 2 spills, 0.1 h - Chopwell Road CSO Not discharging
Northumbrian Water · into River Derwent · 7.0 km by river above Rowlands Gill · 2025: 5 spills, 1.6 h - Hamsterley Colliery PS Not discharging
Northumbrian Water · into Derwent · 6.4 km by river above Rowlands Gill · 2025: 21 spills, 70 h - Armonside Rd Connolly Terrace CSO Not discharging
Northumbrian Water · into River Derwent · 5.9 km by river above Rowlands Gill · 2025: 22 spills, 99 h - Hamsterley Mill Pumping Station Not discharging
Northumbrian Water · into Pont Burn (River Derwent) · 3.8 km by river above Rowlands Gill · 2025: 48 spills, 136 h - High Friarside CSO Not discharging
Northumbrian Water · into Derwent, Tributary Of · 1.7 km by river above Rowlands Gill · 2025: 17 spills, 4.9 h - Whiskey Jacks SPS Not discharging
Northumbrian Water · into River Derwent · 1.3 km by river above Rowlands Gill · 2025: 0 spills, 0 h - Dipwood Road CSO Go16 Not discharging
Northumbrian Water · into Derwent, Tributary Of · 970 m by river above Rowlands Gill · 2025: 23 spills, 18 h
Near these gauges, connection not known
Within 3 km of one of the Derwent’s gauges in a straight line, but the river map cannot say whether their water reaches it.
- Blackhall Mill Pumping Station Not discharging
Northumbrian Water · into Tongue Burn (Derwent) · 180 m from Blackhall Mill in a straight line · several watercourses close by, nothing to choose between them · 2025: 3 spills, 0.1 h - South Terrace CSO (G003) Not discharging
Northumbrian Water · into Tongue Burn · 810 m from Blackhall Mill in a straight line · no mapped watercourse close enough to be sure · 2025: 1 spill, 0.1 h - Rgil Lockhaugh Rd & Shrburn Prk CSO Not discharging
Northumbrian Water · into Trib River Derwent · 1.0 km from Rowlands Gill in a straight line · no mapped watercourse close enough to be sure · 2025: 25 spills, 46 h - West Lane School CSO Not discharging
Northumbrian Water · into Trib Of River Derwent · 1.1 km from Blackhall Mill in a straight line · its watercourse is not on the river map · 2025: 1 spill, 0 h - Busty Bank CSO Not discharging
Northumbrian Water · into Leapmill Burn · 1.2 km from Rowlands Gill in a straight line · its watercourse is not on the river map · 2025: 44 spills, 60 h - Pennine View CSO Not discharging
Northumbrian Water · into Tributary Of River Derwent · 1.2 km from Blackhall Mill in a straight line · its watercourse is not on the river map · 2025: 11 spills, 42 h - Busty Bank CSO Not discharging
Northumbrian Water · into Leapmill Burn Trib · 1.3 km from Rowlands Gill in a straight line · its watercourse is not on the river map · 2025: 0 spills, 0 h - Busty Bank Storm Sewage Overflow Not discharging
Northumbrian Water · into Leapmill Burn · 1.3 km from Rowlands Gill in a straight line · its watercourse is not on the river map · 2025: 2 spills, 0.1 h - Chopwell Park Footpath CSO Not discharging
Northumbrian Water · into Tongue Burn · 1.3 km from Blackhall Mill in a straight line · its watercourse is not on the river map · 2025: 4 spills, 0.5 h - Briardene Not discharging
Northumbrian Water · into Derwent, Tributary Of · 1.4 km from Rowlands Gill in a straight line · no mapped watercourse close enough to be sure · 2025: 4 spills, 0.9 h - Tay Street CSO Not discharging
Northumbrian Water · into Trib Of River Derwent · 1.5 km from Blackhall Mill in a straight line · its watercourse is not on the river map · 2025: 2 spills, 0.3 h - Smailes Lane CSO G15 Not discharging
Northumbrian Water · into Low Spen Burn · 1.6 km from Rowlands Gill in a straight line · its watercourse is not on the river map · 2025: 38 spills, 95 h - Denecrest CSO Not discharging
Northumbrian Water · into Ebchester Burn · 2.3 km from Blackhall Mill in a straight line · its watercourse is not on the river map · 2025: 0 spills, 0 h - Ash Tree Lane CSO Not discharging
Northumbrian Water · into Spen Burn · 2.9 km from Rowlands Gill in a straight line · its watercourse is not on the river map · 2025: 14 spills, 8.9 h
5 other overflows within 3 km of these gauges are placed below the Derwent’s lowest gauge or on another river, so not listed.
A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →
Live status: © Yorkshire Water storm overflow activity data, licensed under CC BY 4.0. Live status: © Severn Trent Water storm overflow activity data, licensed under CC BY 4.0. Live status: © United Utilities storm overflow activity data, licensed under CC BY 4.0. Live status: © Northumbrian Water storm overflow activity data, licensed under CC BY 4.0. Annual figures for England: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence v3.0.
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